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Patented Sept. 27, I898.

LOCK.

(Application filed Jan. 27, 189B.)

A. L. GARLOUGH.

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THE NORRIS PETERS 0a., Pucnou'ruo WASHINGTON, u. e

W/ TNE SSE S NITED STATES PATENT OFFICE.

ALFRED LESLIE GARLOUGH, OF ST. PAUL, MINNESOTA.

LOCK.

SPECIFICATION forming part of Letters Patent N o. 61 1,244, dated September 27, 1898. Application filed January 27, 1898. serial No. 668,185. (Nb model.)

To all whom it may concern:

Be it known that I, ALFRED LESLIE GAR- LOUGH, of St. Paul, in the county of Ramsey and State of Minnesota, have invented new and useful Improvements in Locks, of which the following is a full, clear,'and exact description.

This invention relates to looks for doors and the like; and the object is-to provide a lock of comparatively simple construction that may be operated withoutthe use of a key.'

The lock is of special advantage in tenements, stores, offices, and the like, where it is usually necessary, when key-locks are used, to fit new keys for every new tenant. With the lock embodying my invention it isonly necessary to change the combination, and thus the expense of new keys is avoided.

I will describe a lock embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indi employed, and Fig. 6 shows a tumbler em ployed.

Referring to the drawings, 1 2 designate the side plates of the lock. The side plate 1 is. here shown as arranged on the outer side of a door, and the plate 2 is arranged on the inner side of the door. These side plates 1 and 2 at their lower portions are provided with chambers 3 4:, separated by a partition 5. Each chamber has a hood portion'6 to prevent the entrance of rain or the like. Within these chambers are extended push-pins for operating the lock mechanism from either the inner or outer side of the door, 'as will be hereinafter described.

Arranged between the side plates, and here shown as against the side plate 1, is a casingplate 7, a top plate 8,'and a bottom plate 9. Pivotally connected to the plate 7 is a series of tumbler-carriers 1O, 11, 12, 13, and 14. The rear ends of these tumbler-carriers are 7 mounted on a sleeve, through which a pivotbolt passes into the plate 7, and the forward portions of these tumbler-carriers have extensions 15. Between the extensions 15 of each tumbler-carrier and the body portion thereof there is an openingl6, across which a tumbler 17 is designed tobe adjusted. The tumbler 17 is extendedjoutward from a disk 18, seated in a depression in the tumbler-carrier and mounted to swing on a screw-pivot 19. The outer face of thedisk 18'willbe flush with the surface of the carrier. The tumbler 17 is substantially wedge-shaped or inclined on its upper and lower sides, thewider portion being at the outer end, so that when moved in the properposition the upper wall of the tumbler will be parallel with the upper wall of the opening-16 inthe tumbler-carrier, thus providing an outwardly-opening slot for the reception of the shank portion ofla lockbolt, as will be hereinafter. described.

Arranged below the tumblerrcarriers are a series of plates 20, 21, 22, 23, and 24. Each of these plates moves in a suitable guide in the lock-casing, and each plate has a pushpin 25 extended downward through the plate 9 at the inner side of the partiti'onfi or in the chamber 4, and also each plate has a pushpin 26 extended down into thev chamber 3. Each push-pin 25 has a' finger-piece at its lower end, and each plate has an-u'pward projection 27, designed to engage with the tumbler-carrier that the plate is designed to operate. These projections 27 are of course sufficiently narrowto pass between two carriers.

Movable throughthe front plate 28 of the lock-casin g is a locking-bolt 29. 'At its inner side this locking-bolt 29 has a plate-like shank 30, adapted to move into the opening formed between the tumbler 17 and a wall of the opening in the carrier. Also movable through the front plate 28 is a latch-bolt 31,.having itsshank 32 movable through a bracket 33 in the lock-casing, and between this bracket and the latch-bolt is a spring 34,.which forces and normally holds the'latch-Ibolt' outward. On the-inner upper side of thelocking-bolt 29 is 'an upwardly-extended flange 35, designed to engage against the inner end of the latch-bolt 31, as plainly indicated in Fig. 2.

Having bearings in plates within the plates 1 and 2 of the lock is a rock-shaft 36, to the outer end of which is attached a latch 37, which of course is at the outer side of the door, and attached to the inner end of said shaft at the inner side of the door is a latch 38. This latch 38, however, is designed to have a slight rotary movement with relation to the shaft 36, for a purpose to be hereinafter described. It is therefore provided with a sleeve 39, which engages over the end of the shaft 36, and at the inner end of this sleeve there is a segment 40, designed to en gage its ends with the ends of a segment 41 on the shaft 36.

On the shaft 36, within the lock-casing, is a finger 42, designed to engage with a roller 43 on a pin 44, extended from the latch-bolt 31. A setting-shaft 45 also extends through the inner and outer side plates, having a fingerpiece 46 on its outer end and a finger-piece 47 on its inner end. Mounted on this shaft 45, within the lock-casing, is a downwardlyextended arm 48, which has a transverselyextended plate 49, adapted to engage with the locking-bolt or the flange 35 thereof to move said locking-bolt to its locking position. This plate 49 is also designed to be moved and held in engagement with the upper edges of the tumbler-carriers to prevent the same from being operated, or, in other words, this plate serves as a safety-latch. To prevent its being moved too far rearward, the several tumbler-carriers are provided with shoulders 50, against which the plate will engage, as indicated in dotted lines in Fig. 2. Coacting with this plate and the arm 48 is a hook 51, secured to the sleeve 39. This hook 51 has its body portion extended rearward, and then the hook is extended upward and downward and is adapted to engage with a lug 52extended from the arm 48.

The operation may be described as follows: When the parts are in the position shown in Figs. 1 and 2that is, in a lockin g positionit will be noted that the flange 35 on the locking-bolt 29 engages with the latch-bolt 31. Therefore this latch-bolt cannot be moved longitudinally, and thus it serves also as a locking-bolt. As the lock is now set the tumbler portions 17 of the tumbler-carriers 10 and 12 are moved to the lower portion of the opening 16. Therefore a space is provided between the upper sides of said tumblers and the upper wall of the opening 16, into which the part of the locking-bolt may move. The tumblers of the carriers 11, 13, and 14, however, are moved to engage against the upper wall of the opening 16, so that there is a space between the lower side of said tumblers and the lower wall of the opening 16. Therefore when in the normal position these tumblers for the carriers 11, 13, and 14 will be in the line of movement of the shank 30. \Vhen the plates of the carriers 11, 13, and 14 are pushed upward from either the inner or the outer side of the door by pushing upon the pins 25 or 26, the said carriers will be forced upward, so that the opening between the lower side of the tumblers and the lower wall of the openings 16 will be in line with the shank 30. Therefore the locking-bolt may be moved backward by turning the shaft 36 from either the inner or the outer side of the door by pressing downward on the latches. This rocking of the shaft 36 will cause the arm 42 to move the latch-bolt 31longitudinally out of its keeper, and this latch-bolt by engaging with the flange 35 will of course move the locking-bolt longitudinally out of itskeeper. Then the lifting-plates may be released and they will fall by gravity to their normal position. Upon releasing the latch 37 or 38 the latch-bolt 31 will be moved outward by its spring, of course'returning the shaft 36 and the latches thereon to a normal position. Then the locking-latch may be operated as desired-in opening or closing the door independently of the locking-bolt, which remains in the look at this time. hen, however, it is desired to again lock the door, the shaft is to be rotated from either the inner or outer sideof the door and the plate 49, engaging with the locking-bolt, will force said locking-bolt outward into its keeper and the carrier-plates 11, 13, and 14 will fall to their normal position to prevent the release I of the locking-bolt. When thus locked and it is desired to prevent the opening of the door from the outside, the safety-catch is to be placed in position. In order to do this, the inner latch 38 is to be moved upward. This will move the hook 51 upward, and then the plate 49 is to be swung over the several carriers by rocking the shaft 45. At this time the pin or lug 52 on the arm 48 will come underneath the hook. Then by releasing the latch 38 said hook will fall into engagement with said lug. At this time of course the several carriers cannot be moved upward from either the inner or outer sides of the door. When it is desired to release the safety-catch, the latch 38 is to be moved upward, when the plate 49 will swing by gravity out of engagement with the carriers. This operation cannot be performed by means of the latch 37, because the hook 51, as before stated, is attached to the sleeve. 39, which has a movement rotatively with relation to the shaft 36.

The combinations of this look may be changed at will by simply removing the several carriers, and as each one may swing independently upon the sleeve upon'which the several carriers are mounted each carrier may be swung to a position so that the screw-pivots 19 may be reached. By loosening the screw-pivots 19 the plates or disks 18 may be rotated to move the tumblers into either the upper or the lower position, as desired.

It is obvious that thecombination may be made more complicated by increasing the number of carriers and tumblers. Therefore I do not limit my invention to any particular number of these devices.

As there are no keyholes to this lock, it is obvious that an instrument cannot be inserted from the outer side, or, in fact, from the inner side, to pick or operate the look. It is also obviousthat the lock maybe easily and quickly operated to open it, as it is only necessary to engage the finger-pieces of the lifting-plates with the fingers of one hand and to engage the latch with the thumb of the same hand. First, of course, the plates must be moved upward by the fingers. Then the latch may be swung downward by the thumb.

As there are no fine steel springs employed in this look, as in ordinary locks, there is no part that is liable to get out of order or be easily broken.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A look, comprising a casing, a lockingbolt movable therein, a latch-bolt movable in the casin g, a series of tumbler-carriers mounted to swing in the casing, the said tumblercarriers having openings at one side in line with a projection of the locking-bolt, tumblers adjustable across said openings, means for lifting the tumbler-carriers one independently of the other, and means for moving the locking and latch bolts inward after said tumbler-carriers shall have been lifted, substantially as specified.

2. A look, comprising a casing, a lockingbolt movable therein and having an upward projection, a latch-bolt movable in the casing and adapted to engage with said upward projection, a series of tumbler-carriers mounted to swing in the casing, each tumbler-carrier having an opening at its front in the line of movement of a shank-plate on the lockingbolt, tumblers adjustable across said openings, means for lifting the tumbler-carriers one independently of another, a shaft extended through the lock-casing, operating devices on the inner and outer ends of said shaft, and an arm on said shaft within the lock-casing adapted to engage with a projection on the latch-bolt substantially as specified.

3. A look, comprising a casing, a locking bolt movable therein and having an upwardlyextended flange, a latch-bolt movable in the casing and adapted to engage with said flange, a series of tumbler-carriers mounted to swing in the casing, each having an opening in its forward portion in line with the shank-plate on the inner end of the locking-bolt, tumblers adjustable across said openings, a shaft extended through the lock-casing and having turning devices on the inner and outer ends, an arm on said shaft within the casing adapted to engage with a projection from the latchbolt, another shaft extended through the casing and having turning devices on its inner and outer ends, and means carried by said other shaft for engaging with the locking-bolt to move it to its locking position, substantially as specified.

L A look, comprising a casing, tumbler-carriers mounted to swing in the casing, means for moving said tumbler-carriers vertically from either the inner or the outer side of a door to which the lock may be attached, a locking-bolt movable in the casing and having a shank extended in the line of openings in the tumbler-carriers, tumblers adjustable across the openings in said carriers, a latchbolt movable in the casing and adapted to engage with an upward projection on the locking-bolt, a shaft extended through the lockcasing, an arm on said shaft within the easing and engaging with a pin extended from the latch-bolt, an operating-latch on the outer end of said shaft, a sleeve mounted on the inner end of said shaft and adapted to rotate relatively thereto, a latch on said sleeve, a hook-carried by said sleeve within the lockcasing, another shaft extended through the lock-casing and having operating devices on its inner and outer ends, an arm depending from said shaft within the lock-casing, a plate on said arm extended transversely of the tumbler-carriers, and a projection on said arm adapted to be engaged with the hook on the sleeve to hold the plate in engagement with the upper sides of the tumbler-carriers, thus forming a safety-latch, substantially as speciiied.

5. A look, comprising a casing, a lockingbolt movable therein, a spring-pressed latchbolt movable in said casing, means for moving said latch-bolt and also for moving the lockingbolt, a series of tumblercarriers mounted to swing in the lock-casing, the said carriers having openings in the line of movement of an extension on the locking-bolt, tumblers adjustable across said openings, plates movable in guides underneath the tumblercarriers, the said plates having upward projections to engage with the tumbler-carriers, and pins extended downward from said plates through openings in the bottom plate of the lock-casing, each plate having two such pins, one pin being at one side of the partition and the other pin at the other side of the said partition, substantially as specified.

6. In a look, a plate-like tumbler-carrier having an outward opening, a disk mounted to rotate relatively to said carrier, and a tumbler extended from the disk into the opening of the carrier, substantially as specified.

ALFRED LESLIE GARLOUGH.

Witnesses:

JNo. V. I. DODD, PAUL BERGFORD. 

